Hoisting apparatus.



J. E. STEWART.

HOISTING APPARATUS.

APPLICATION man JAN. 18. 1917 LQQEAQVL Patented June 5, 1917.

JOHN E. STEWART; or OAKLAND, ILLINOIS.

HOISTING- APPARATUS.

Specification of Letters Patent.

Patented June 5, M91 77.

Application filed January 18, 1917. Serial No. 143,099.

To all whom it may concern:

Be it known that I, JOHN E. S'rnwsn", a citizen of the Unlted States,and resident of Oakland, in the county of Coles and State of Illinois,have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification.

The present invention relates to new and useful improvements in hoistingapparatus.

The primary object of my invention is to provide a hoisting apparatushaving means associated therewith to release the load carried when thesame has been conveyed to the desired location Another object of myinvention is to provide a device of thecharacter described hav ing meansassociated therewith to convey articles of various sizes and Weightswithout hindering the operation of my releasing mechanism.

A further object of my invention is to provide an apparatus in which theparts thereof are closely assembled, and combined, thereby taking aminimum amount of space.

Other improvements and novel details in the construction and arrangementof the various parts of the apparatus will be brought out more in detailin the description to follow, which, for a clear understanding of theinvention, should be considered in connection with the accompanyingdrawings forming a part hereof, and wherein is disclosed, for thepurpose of illustration, convenient and satisfactory embodiments of theinvention. It is to be noted, in this connection that minor changes inthe construction and arrangement of the parts may be made withoutdeparting from the spirit of the invention or the principal operation ofthe va rious parts.

In the drawings: a

Figure l is a perspective view of my invention as applied, and

Fig. 2 is a detail sectional view of the pivotal connection of thereleasing rod and link member.

Referring now more particularly to the drawings wherein similarcharacters of reference designate like and corresponding partsthroughout the various views, 10 designates a track for the carriage 11having the common form of block 12 and tackle 13 associated therewithfor raising and lowering the load carried as desired. The body portionof my invention comprises a sheet metal band flexed intermediate itsends forming an enlarged loop 1% connected to the block 12 by means ofthe link member 15.

A pair of arms 16 extend in parallel relation from the said loop portionl-l. A link member 17 and a rod 18 are pivotally connected to the freeends of the arms by means of a pin 19. An enlargement is formed on thesaid rod adjacent the connection to the arm 16 having a projection 20extending therefrom for a purpose which will hereinafter appear. A chainmember 21 has one end thereof connected to the link 17 and the oppositeend adapted for detachable association between said projection andportion 25. A flexible element is connected to the rod 18 through theopening Said flexible element is trained over a pulley 23 rotatablymounted between the said arms adjacent the enlarged loop 14.

In use when the bale of hay 24 as used in this case has been conveyed tothe desired position over the track 10 the person operating the samepulls the flexible element 22 which raises the arm 18 as indicated indotted lines thus releasing the chain from the projection 20, causingthe load to be dropped.

From the above description taken in connection with the accompanyingdrawing, it can easily be seen that I have provided a device that issimple in construction, coir taining but a few simple parts that can becheaply manufactured and assembled and when assembled can be placed uponthe market and sold at a minimum cost.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is 1. A hoisting device comprising a sheetmetal band fleXed intermediate its ends forming a pair of parallel arms,a link menr ber mounted between the ends of said arms, a rod having anopening in each end thereof and pivotally connected to the said arms between the ends of the link member, an en largement formed on the end ofsaid rod ad jacent the end pivotally connected to said arms, aprojection extending from said enlargement, a chain having one on:connected to the said link, the free end of the chain adapted forengagement with the said projection, a pulley wheel rotatably mountedbetween the said arms, a flexible element attached to the other openingin said rod and trained over the said pulley for 5 forming an enlargedloop, a pair :1 purpoee described :1 iate its ends of parallel armsextending from said loop, a rod, it link, sald rod and link beingpivotally connected to the free ends of said arms, :1 chain havlngCopies of this patent may be obtained for five cents each, by addressingthe one end thereof connected to the said link, and the opposite endconnected to the said rod and adapted to be released upon the raising ofthe said rod.

In testimony whereof, I affix my signature hereto.

JOHN E. STEWART.

Commissioner of IEatents,

Washington, D. 0.

